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<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">

        *{
            margin: 0px;
            padding: 0px;
            background-color: black;
        }
        #bottom{
            width: 100%;
            height: 50px;
            background-color: #80CCDE;
            font-size: 30px;
            text-align: center;

        }

    </style>
</head>
<body>
<div id="bottom">
    一二三四五 上山打老虎 老虎不在家 打到
</div>
</body>
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